Release 0.5.2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 270abdc..d8fd327 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@
 
 ## [Unreleased]
 
+## [0.5.2] - 2020-12-29
+
+- Documentation improvements.
+
 ## [0.5.1] - 2020-10-14
 
 - Implement `Parse` for `Signature`.
@@ -54,7 +58,8 @@
 
 Initial release
 
-[unreleased]: https://github.com/taiki-e/syn-mid/compare/v0.5.1...HEAD
+[unreleased]: https://github.com/taiki-e/syn-mid/compare/v0.5.2...HEAD
+[0.5.2]: https://github.com/taiki-e/syn-mid/compare/v0.5.1...v0.5.2
 [0.5.1]: https://github.com/taiki-e/syn-mid/compare/v0.5.0...v0.5.1
 [0.5.0]: https://github.com/taiki-e/syn-mid/compare/v0.4.0...v0.5.0
 [0.4.0]: https://github.com/taiki-e/syn-mid/compare/v0.3.0...v0.4.0
diff --git a/Cargo.toml b/Cargo.toml
index 2a9cc5f..82b3a22 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "syn-mid"
-version = "0.5.1"
+version = "0.5.2"
 authors = ["Taiki Endo <te316e89@gmail.com>"]
 edition = "2018"
 license = "Apache-2.0 OR MIT"